I usually just get a new engine. It sucks to do, but it's not worth the parts to fix up an engine like that. I recommend a Novarossi .21BF for 150 dollars. It will last for a long time. the carbs are the best too. Nothing wobbles or leaks. good luck man....

if it wasn't running hot then it was maybe too rich on the lsn, when orings go bad tuning is almost impossible. i did crack a couple cases before but temps went through the roof. i tried a nova carb before but noticed no defference in the motor other than now i hadf to learn how to tune a nova carb, i was so used to the go carbs already. flameouts are caused by way more than the motors rod/crank, fuel line, tank, clutch, mesh, etc.... what else have you checked?

I was planning on sending the p/s to Ray tomorrow. I just took a caliper to the crank pin and the lowest i got was 4.79mm and i got 4.97 right next to the big part of the crank. So i'm guessing 4.79 means it's shot.

I'm really not looking to spend alot right now Marcus. Especially since Dennis will give me his Grenade.

if you are going to continue to run the grenade look for a new go tech cooling head..
as thats were most the heat issues arise the head is so thick it cant accuretly cool the engine thats why they run 260-270 all the time.

I was planning on sending the p/s to Ray tomorrow. I just took a caliper to the crank pin and the lowest i got was 4.79mm and i got 4.97 right next to the big part of the crank. So i'm guessing 4.79 means it's shot.